Christian Rishel - Circudyne

Summer Reading 2026

A Pattern Language

Christopher Alexander built a language for making places that serve human needs beautifully and economically. It doubles as a manual for choosing well where no data exists — the exact position circularity strategists occupy today.

Mid-century travel poster: the view from a grassy hillside, a taupe hardcover book in the foreground, a tidy factory below, and Mount Fuji rising beyond under a bright citrine sky.

Summer Reading 2026

Toyota Production System

Lean's founding text by Taiichi Ohno shows that the most celebrated efficiency revolution in business history was circular from the start — and hands circularity transformation its strongest precedent.

Mid-century travel poster: the view from a lake dock at night, a navy hardcover book on a pale blanket in the foreground, citrine meteors crossing a dense starfield.

Summer Reading 2026

The Innovator's Dilemma

Clayton Christensen’s iconic analysis reveals why well-run companies at the peak of their powers are routinely vulnerable to disruption. We examine his thesis through the lens of circularity disruption.

Mid-century poster-style illustration from a seat in a summer baseball park, green diamond below, a gap in the grandstand revealing a city skyline with twin towers, and a teal hardcover book

Summer Reading 2026

Playing to Win

Strategy is a choice, so you might as well choose to win. For circularity leaders, the framework offers an opportunity and a moment of truth.

Mid-century poster-style illustration of an empty red clay tennis court in a small sunken garden stadium on a sunny morning, net stretched across the court and a single yellow ball on the cla

Summer Reading 2026

The Logic of Scientific Revolutions

Two esteemed points of view on the nature of progress, how it applies to strategy, and what it means for circularity transformation.

Mid-century poster illustration from a boardwalk: a single navy book on sunlit planks, a wooden roller coaster's peaks and dips rising against a teal sky, calm sea beyond.

Summer Reading 2026

Industrial Dynamics

The summer reading series arrives at the wellspring: Jay Wright Forrester's 1961 book, the bedrock beneath circularity's systems thinking.

Mid-century travel-poster illustration: first-person view across a grass tennis court, a single closed book resting on the near sideline, citrine sunlight and an open teal sky, no people.

Systems Dynamics

Thinking in Systems

Donella Meadows built an exquisite analytical toolkit, then told us exactly where its utility ends. The future can only be envisioned, not analyzed.

Mid-century illustration from a lake dock: three stacked books in the foreground, two citrine canoes on still water, and a row of yellow canvas tents among pines across the shore.

Circular Fundamentals

Circularity Summer Camp

The founding texts of circularity — Benyus, McDonough & Braungart, and Stahel — read together. Three merit badges earned, and one still on the table.

Mid-century travel-poster illustration of a New England beach from the reader's view: a single navy book on pale sand, a small sloop on the teal sea, a robin's egg blue sky.

Circular Fundamentals

The Circular Economy: A User's Guide

The summer reading season opens with Walter Stahel's introductory text — a book that reaches for what's still missing: a longing for the circular economy.

A gouache of an Edwardian country-house lawn: a round mid-century theater rotunda rises over the grass, dwarfing the empty wicker chairs and tea table; a manor in the distance.

Carousel of Plenty

The Carousel of Plenty

The season's real subject turned out to be the good life — and the kind of luxury that comes from a better place than scarcity.

Mid-century-style painting of a sunny country-house lawn: a silver flying saucer hovers over the grass beyond an empty wicker chair and a set tea table, a manor house in the distance.

Circular Century

The Circular Century — So What

Clarke said that whether or not we are alone in the universe, the prospect is terrifying. This season's final letter asks what would make us worthy of the answer.

Illustration of an Edwardian country lawn at golden hour: a tea table and croquet set on the grass, a wind turbine turning behind the manor house, and a rocket rising in the distance.

Circular Century

Coping with Abundance

Every age of plenty before this one was fleeting — squandered by an economy that profits from more. The Circular Century is the first abundance built to stay. Which leaves only the question of how to cope with it.

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